From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A90B9C433E0 for ; Wed, 3 Jun 2020 07:22:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8582720679 for ; Wed, 3 Jun 2020 07:22:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="I0S3XYU+" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726183AbgFCHWv (ORCPT ); Wed, 3 Jun 2020 03:22:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46402 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726151AbgFCHWr (ORCPT ); Wed, 3 Jun 2020 03:22:47 -0400 Received: from mail-pg1-x541.google.com (mail-pg1-x541.google.com [IPv6:2607:f8b0:4864:20::541]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1EB24C05BD43 for ; Wed, 3 Jun 2020 00:22:47 -0700 (PDT) Received: by mail-pg1-x541.google.com with SMTP id e9so1134880pgo.9 for ; Wed, 03 Jun 2020 00:22:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=KH9mdDVcPHEY0mojValvd3JCyi55UJUFJ61D84czA9Q=; b=I0S3XYU+nNeK9ISWU1458r0kuMd3K6rN3SacyxgQr4DuSLAFPR9t4UhOauqbuhZ20a yPdlKC9njptkxgd0ZbIPtSUEepv9SglcMj5d0r2RY+ztemInMrrqQMKxZy3fxHIc1dpx N0G4bvRaNTwS68qdSTC/GjutgZjwd4gPu5FvrAn6s8S2iYs9zOpr3G7CCJ/n42dPfe8z x158WQg1stswQjoqv9wfJBP1i7XSDB33JFHoVujRwZvQyvf3sCN+rO/94JYQUWrF7h6p laiQKIEttSSC0ugoS9IaUiwu5Ob3mP8NiEE3NCuC88Yb5XpYdDCngMAGq6NVoPUMlPjK wEIQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=KH9mdDVcPHEY0mojValvd3JCyi55UJUFJ61D84czA9Q=; b=QY/y1T6oJQiP+U74qTE9G/0OXZ5YwyOb0nkTGI5euXMhXlA407iFEOWHLTdMqg83qJ FwEmceFuqn8xw17ZETGsI3Yum0g23PeYKNyi2DSKU4Op9Zj1y5vrbISUbsFRoULRJ5zM WtswH+jPGHgPnfPgdApbEV1gbw8D2cCFPhNtmI6/erHNqLYq1it8sdDou5zhHcfF9QuU dL0duFE03xPCHGrRgXcDJ2CZC/cy+Gerverl2AsjvcdC7cQ1W4BDEvLW4M6fhHa2BCIM NKKW82VZm5S0/hECUO56CzuEyQN8mg1ic1OzT7g6nduX6c0l+ijVexdekitQcCiAYVI+ VfHA== X-Gm-Message-State: AOAM533GFfiM7KB62W2TpHLKRujhpkhNyjZ3IIJV++6lNpY/Z2f8lnBV qV2DgPAKoqcgNL15+kLOktehBw== X-Google-Smtp-Source: ABdhPJzbIj0dPQSD91jSKU+b3V+XS3Q+jbXkgTqE7TWO3f+KavuzGx+MLzMkc43ztjLhIFtbPkoPgQ== X-Received: by 2002:a17:90a:f198:: with SMTP id bv24mr4099950pjb.206.1591168966618; Wed, 03 Jun 2020 00:22:46 -0700 (PDT) Received: from localhost.localdomain ([117.252.66.248]) by smtp.gmail.com with ESMTPSA id j17sm1407272pjy.22.2020.06.03.00.22.40 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 03 Jun 2020 00:22:45 -0700 (PDT) From: Sumit Garg To: daniel.thompson@linaro.org Cc: kgdb-bugreport@lists.sourceforge.net, jason.wessel@windriver.com, dianders@chromium.org, pmladek@suse.com, sergey.senozhatsky@gmail.com, gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org, Sumit Garg Subject: [PATCH v5 2/4] kdb: Check status of console prior to invoking handlers Date: Wed, 3 Jun 2020 12:52:13 +0530 Message-Id: <1591168935-6382-3-git-send-email-sumit.garg@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1591168935-6382-1-git-send-email-sumit.garg@linaro.org> References: <1591168935-6382-1-git-send-email-sumit.garg@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Check if a console is enabled prior to invoking corresponding write handler. Suggested-by: Sergey Senozhatsky Signed-off-by: Sumit Garg Reviewed-by: Daniel Thompson Reviewed-by: Douglas Anderson --- kernel/debug/kdb/kdb_io.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c index 2d42a02..58b7d25 100644 --- a/kernel/debug/kdb/kdb_io.c +++ b/kernel/debug/kdb/kdb_io.c @@ -560,6 +560,8 @@ static void kdb_msg_write(const char *msg, int msg_len) } for_each_console(c) { + if (!(c->flags & CON_ENABLED)) + continue; c->write(c, msg, msg_len); touch_nmi_watchdog(); } -- 2.7.4